RFR: 8305418: [Linux] Replace obsolete XIM as Input Method Editor [v25]

[Thiago Milczarek Sayao]

On Sun, 6 Oct 2024 00:51:04 GMT, Martin Fox <mfox at openjdk.org> wrote:

>> I'll do more testing.
>
> @tsayao I'm testing your code before you made the last set of changes. On Ubu 22 running the X11 backend these AltGr combinations generate the expected TYPED character. On Ubu 24 running Wayland I can reproduce this bug. I suspect this is a Wayland issue.
> 
> I'm also seeing some strangeness in the KeyCode assigned to the AltGr key. It depends on the ordering of layouts in my layout list; if English comes before Polish the AltGr key is given the correct key code but if Polish comes before English it comes out UNDEFINED. This has nothing to do with your code since I can reproduce it on the master branch. And it happens on both X11 and Wayland. I'll take a look at that.

@beldenfox I'm on Ubuntu 24.04 and it does not work on X11 either. It seems to filter all key press of characters following Alt Gr (aka Level3 Shift).

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PR Comment: https://git.openjdk.org/jfx/pull/1080#issuecomment-2395573900